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Open Source Computer Vision Library
https://opencv.org/
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204 lines
7.3 KiB
204 lines
7.3 KiB
# ---------------------------------------------------------------------------- |
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# Detect Microsoft compiler: |
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# ---------------------------------------------------------------------------- |
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if(CMAKE_CL_64) |
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set(MSVC64 1) |
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endif() |
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if(CMAKE_CXX_COMPILER_ID STREQUAL "Clang") |
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set(CMAKE_COMPILER_IS_GNUCXX 1) |
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set(CMAKE_COMPILER_IS_CLANGCXX 1) |
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endif() |
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if(CMAKE_C_COMPILER_ID STREQUAL "Clang") |
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set(CMAKE_COMPILER_IS_GNUCC 1) |
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set(CMAKE_COMPILER_IS_CLANGCC 1) |
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endif() |
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if("${CMAKE_CXX_COMPILER};${CMAKE_C_COMPILER}" MATCHES "ccache") |
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set(CMAKE_COMPILER_IS_CCACHE 1) |
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endif() |
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# ---------------------------------------------------------------------------- |
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# Detect Intel ICC compiler -- for -fPIC in 3rdparty ( UNIX ONLY ): |
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# see include/opencv/cxtypes.h file for related ICC & CV_ICC defines. |
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# NOTE: The system needs to determine if the '-fPIC' option needs to be added |
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# for the 3rdparty static libs being compiled. The CMakeLists.txt files |
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# in 3rdparty use the CV_ICC definition being set here to determine if |
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# the -fPIC flag should be used. |
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# ---------------------------------------------------------------------------- |
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if(UNIX) |
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if (__ICL) |
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set(CV_ICC __ICL) |
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elseif(__ICC) |
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set(CV_ICC __ICC) |
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elseif(__ECL) |
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set(CV_ICC __ECL) |
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elseif(__ECC) |
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set(CV_ICC __ECC) |
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elseif(__INTEL_COMPILER) |
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set(CV_ICC __INTEL_COMPILER) |
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elseif(CMAKE_C_COMPILER MATCHES "icc") |
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set(CV_ICC icc_matches_c_compiler) |
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endif() |
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endif() |
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if(MSVC AND CMAKE_C_COMPILER MATCHES "icc|icl") |
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set(CV_ICC __INTEL_COMPILER_FOR_WINDOWS) |
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endif() |
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# ---------------------------------------------------------------------------- |
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# Detect GNU version: |
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# ---------------------------------------------------------------------------- |
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if(CMAKE_COMPILER_IS_CLANGCXX) |
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set(CMAKE_GCC_REGEX_VERSION "4.2.1") |
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set(CMAKE_OPENCV_GCC_VERSION_MAJOR 4) |
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set(CMAKE_OPENCV_GCC_VERSION_MINOR 2) |
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set(CMAKE_OPENCV_GCC_VERSION 42) |
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set(CMAKE_OPENCV_GCC_VERSION_NUM 402) |
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execute_process(COMMAND ${CMAKE_CXX_COMPILER} ${CMAKE_CXX_COMPILER_ARG1} -v |
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ERROR_VARIABLE CMAKE_OPENCV_CLANG_VERSION_FULL |
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ERROR_STRIP_TRAILING_WHITESPACE) |
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string(REGEX MATCH "version.*$" CMAKE_OPENCV_CLANG_VERSION_FULL "${CMAKE_OPENCV_CLANG_VERSION_FULL}") |
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string(REGEX MATCH "[0-9]+\\.[0-9]+" CMAKE_CLANG_REGEX_VERSION "${CMAKE_OPENCV_CLANG_VERSION_FULL}") |
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elseif(CMAKE_COMPILER_IS_GNUCXX) |
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execute_process(COMMAND ${CMAKE_CXX_COMPILER} ${CMAKE_CXX_COMPILER_ARG1} -dumpversion |
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OUTPUT_VARIABLE CMAKE_OPENCV_GCC_VERSION_FULL |
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OUTPUT_STRIP_TRAILING_WHITESPACE) |
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execute_process(COMMAND ${CMAKE_CXX_COMPILER} ${CMAKE_CXX_COMPILER_ARG1} -v |
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ERROR_VARIABLE CMAKE_OPENCV_GCC_INFO_FULL |
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OUTPUT_STRIP_TRAILING_WHITESPACE) |
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# Typical output in CMAKE_OPENCV_GCC_VERSION_FULL: "c+//0 (whatever) 4.2.3 (...)" |
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# Look for the version number, major.minor.build |
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string(REGEX MATCH "[0-9]+\\.[0-9]+\\.[0-9]+" CMAKE_GCC_REGEX_VERSION "${CMAKE_OPENCV_GCC_VERSION_FULL}") |
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if(NOT CMAKE_GCC_REGEX_VERSION)#major.minor |
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string(REGEX MATCH "[0-9]+\\.[0-9]+" CMAKE_GCC_REGEX_VERSION "${CMAKE_OPENCV_GCC_VERSION_FULL}") |
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endif() |
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if(CMAKE_GCC_REGEX_VERSION) |
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# Split the parts: |
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string(REGEX MATCHALL "[0-9]+" CMAKE_OPENCV_GCC_VERSIONS "${CMAKE_GCC_REGEX_VERSION}") |
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list(GET CMAKE_OPENCV_GCC_VERSIONS 0 CMAKE_OPENCV_GCC_VERSION_MAJOR) |
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list(GET CMAKE_OPENCV_GCC_VERSIONS 1 CMAKE_OPENCV_GCC_VERSION_MINOR) |
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else()#compiler returned just the major version number |
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string(REGEX MATCH "[0-9]+" CMAKE_GCC_REGEX_VERSION "${CMAKE_OPENCV_GCC_VERSION_FULL}") |
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if(NOT CMAKE_GCC_REGEX_VERSION)#compiler did not return anything reasonable |
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set(CMAKE_GCC_REGEX_VERSION "0") |
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message(WARNING "GCC version not detected!") |
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endif() |
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set(CMAKE_OPENCV_GCC_VERSION_MAJOR ${CMAKE_GCC_REGEX_VERSION}) |
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set(CMAKE_OPENCV_GCC_VERSION_MINOR 0) |
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endif() |
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set(CMAKE_OPENCV_GCC_VERSION ${CMAKE_OPENCV_GCC_VERSION_MAJOR}${CMAKE_OPENCV_GCC_VERSION_MINOR}) |
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math(EXPR CMAKE_OPENCV_GCC_VERSION_NUM "${CMAKE_OPENCV_GCC_VERSION_MAJOR}*100 + ${CMAKE_OPENCV_GCC_VERSION_MINOR}") |
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message(STATUS "Detected version of GNU GCC: ${CMAKE_OPENCV_GCC_VERSION} (${CMAKE_OPENCV_GCC_VERSION_NUM})") |
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if(WIN32) |
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execute_process(COMMAND ${CMAKE_CXX_COMPILER} -dumpmachine |
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OUTPUT_VARIABLE OPENCV_GCC_TARGET_MACHINE |
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OUTPUT_STRIP_TRAILING_WHITESPACE) |
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if(OPENCV_GCC_TARGET_MACHINE MATCHES "amd64|x86_64|AMD64") |
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set(MINGW64 1) |
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endif() |
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endif() |
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endif() |
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if(MSVC64 OR MINGW64) |
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set(X86_64 1) |
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elseif(MINGW OR (MSVC AND NOT CMAKE_CROSSCOMPILING)) |
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set(X86 1) |
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elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "amd64.*|x86_64.*|AMD64.*") |
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set(X86_64 1) |
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elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "i686.*|i386.*|x86.*|amd64.*|AMD64.*") |
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set(X86 1) |
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elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "^(arm.*|ARM.*)") |
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set(ARM 1) |
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elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "^(aarch64.*|AARCH64.*)") |
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set(AARCH64 1) |
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endif() |
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# Workaround for 32-bit operating systems on 64-bit x86_64 processor |
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if(X86_64 AND CMAKE_SIZEOF_VOID_P EQUAL 4 AND NOT FORCE_X86_64) |
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message(STATUS "sizeof(void) = 4 on x86 / x86_64 processor. Assume 32-bit compilation mode (X86=1)") |
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unset(X86_64) |
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set(X86 1) |
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endif() |
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# Similar code exists in OpenCVConfig.cmake |
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if(NOT DEFINED OpenCV_STATIC) |
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# look for global setting |
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if(NOT DEFINED BUILD_SHARED_LIBS OR BUILD_SHARED_LIBS) |
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set(OpenCV_STATIC OFF) |
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else() |
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set(OpenCV_STATIC ON) |
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endif() |
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endif() |
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if(MSVC) |
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if(CMAKE_CL_64) |
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set(OpenCV_ARCH x64) |
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elseif((CMAKE_GENERATOR MATCHES "ARM") OR ("${arch_hint}" STREQUAL "ARM") OR (CMAKE_VS_EFFECTIVE_PLATFORMS MATCHES "ARM|arm")) |
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# see Modules/CmakeGenericSystem.cmake |
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set(OpenCV_ARCH ARM) |
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else() |
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set(OpenCV_ARCH x86) |
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endif() |
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if(MSVC_VERSION EQUAL 1400) |
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set(OpenCV_RUNTIME vc8) |
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elseif(MSVC_VERSION EQUAL 1500) |
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set(OpenCV_RUNTIME vc9) |
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elseif(MSVC_VERSION EQUAL 1600) |
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set(OpenCV_RUNTIME vc10) |
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elseif(MSVC_VERSION EQUAL 1700) |
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set(OpenCV_RUNTIME vc11) |
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elseif(MSVC_VERSION EQUAL 1800) |
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set(OpenCV_RUNTIME vc12) |
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elseif(MSVC_VERSION EQUAL 1900) |
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set(OpenCV_RUNTIME vc14) |
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elseif(MSVC_VERSION EQUAL 1910 OR MSVC_VERSION EQUAL 1911) |
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set(OpenCV_RUNTIME vc15) |
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endif() |
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elseif(MINGW) |
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set(OpenCV_RUNTIME mingw) |
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if(MINGW64) |
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set(OpenCV_ARCH x64) |
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else() |
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set(OpenCV_ARCH x86) |
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endif() |
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endif() |
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# Fix handling of duplicated files in the same static library: |
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# https://public.kitware.com/Bug/view.php?id=14874 |
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if(CMAKE_VERSION VERSION_LESS "3.1") |
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foreach(var CMAKE_C_ARCHIVE_APPEND CMAKE_CXX_ARCHIVE_APPEND) |
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if(${var} MATCHES "^<CMAKE_AR> r") |
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string(REPLACE "<CMAKE_AR> r" "<CMAKE_AR> q" ${var} "${${var}}") |
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endif() |
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endforeach() |
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endif() |
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if(ENABLE_CXX11) |
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#cmake_minimum_required(VERSION 3.1.0 FATAL_ERROR) |
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set(CMAKE_CXX_STANDARD 11) |
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set(CMAKE_CXX_STANDARD_REQUIRED TRUE) |
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set(CMAKE_CXX_EXTENSIONS OFF) # use -std=c++11 instead of -std=gnu++11 |
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if(CMAKE_CXX11_COMPILE_FEATURES) |
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set(HAVE_CXX11 ON) |
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endif() |
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endif() |
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if(NOT HAVE_CXX11) |
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ocv_check_compiler_flag(CXX "" HAVE_CXX11 "${OpenCV_SOURCE_DIR}/cmake/checks/cxx11.cpp") |
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if(NOT HAVE_CXX11 AND ENABLE_CXX11) |
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ocv_check_compiler_flag(CXX "-std=c++11" HAVE_STD_CXX11 "${OpenCV_SOURCE_DIR}/cmake/checks/cxx11.cpp") |
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if(HAVE_STD_CXX11) |
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11") |
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set(HAVE_CXX11 ON) |
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endif() |
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endif() |
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endif()
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